We studied the influence of a magnetic field (MF) on epitaxial growth and magnetic properties of Fe(001) films deposited on MgO(001). Thanks to modular sample holders and a specialized manipulator in our multi-chamber ultrahigh vacuum system, the films could be deposited and annealed in an in-plane MF of 100 mT. In situ scanning tunnelling microscopy showed that MF had a strong influence on the film morphology, and, in particular, on the structure of surface steps. The magnetic properties were studied ex situ using magneto-optic Kerr effect (MOKE) magnetometry and microscopy. We showed that the moderate in-plane magnetic field applied during growth has the visible impact on the magnetic properties. The observed angular dependence of the MOKE loops and domain structures were discussed based on a magnetization reversal model. In particular we found that magnetization reversal occurs via 90{\deg} domains and the reversal differs for the no-field and in-field grown samples, in correlation with the film morphology.
@article{arxiv.2309.03583,
title = {Magnetization reversal in Fe(001) films grown by magnetic field assisted molecular beam epitaxy},
author = {B. Blyzniuk and A. Dziwoki and K. Freindl and A. Kozioł-Rachwał and E. Madej and E. Młyńczak and M. Szpytma and D. Wilgocka-Ślezak and J. Korecki and N. Spiridis},
journal= {arXiv preprint arXiv:2309.03583},
year = {2023}
}